For the impatient that is a very long time
Here in Memphis, Rho Gamma is a city wide chapter that covers two schools (Christian Brothers and Rhodes). The chapter has been dormant for about 4 or 5 years. There is a young lady that goes to Rhodes that wants Rhodes taken off the charter with Christian Brothers so that Rhodes can charter their own chapter so that she can pledge undergrad. She has called and left messages with past Memphis Alumnae Chapter presidents and Regional Directors about this. She couldn't understand why no one would call her back. When asked why not just wait and pledge an Alumnae Chapter, she says it won't be as fun.
(Another soror told me this story. She has actually had conversations with this young lady. Let's just say this soror is one of the "nicer" sorors.)